| 摘要 |
An illuminating device (D) comprises a screen (EC), comprising front (FV) and back sides bounded by edges (B1-B4) having opposite ends, and at least one photon-generating light source. At least one of the edges (B1-B3) comprises, on the back side, first three-dimensional structures (ST1) suitable for totally reflecting photons, issued from one of its ends or from a central portion, toward the front side (FV) so that they exit via this edge (B1-B3). |
